This image provided by the San Diego Zoo shows Xiao Liwu receiving his first veterinary exam on Aug. 23, 2012, in San Diego. The exam determined that the cub was healthy and thriving at 1.5 pounds, but its sex could not be determined at the time. Xiao Liwu is the sixth giant panda born at the San Diego Zoo, the most born at a breeding facility outside of China.
Ken Bohn / San Diego Zoo
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